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(No Model.) 3 Sheets-Sheet 1.

T. W. GODWIN. -STEAM GENERATOR.

No. 549,782. Patented Nov. 12,1895.

(ii A Zo JZFoda/m [NYE/V202 (No Model). 3 Sheets-Sheet 2.

T. W. GODWIN [STEAM GENERATOR.

Patented Nov. 12, 1895.

9 I y Y AN DREW B GRAHAM. HUTO-lZ'THQWASHINGTOMD C (No Model.)3Sh'eetsSheet 3. T. W. GODWIN. STEAM GENERATOR.

No. 549,782. Patented Nov. 12, 1895.

JUVVE/VIOZ WITNESSES I UNITED STATES PATENT OFFICE.

THOMAS WV. GODVVIN, OF NORFOLK, VIRGINIA, ASSIGNOR OF ONE-HALF TO ALBERTL. WOODWORTII AND CLARENCE D. VVHITING, OF SAME PLACE.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 549,782, dated November12, 1895.

Application, filed AiigustSO, 1895:. Serial No. 561,021. (No model.)

To all whom it may concern:

Be it known that I, THOMAS W. GODWIN, a citizen of the United States ofAmerica, residing at Norfolk, in the county of Norfolk and State ofVirginia, have invented certain new and useful Improvements inSteam-Generators; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to lettersof reference marked thereon, which form a part of this specification.

The object of this invention is to provide a steam generator or boilerwhich is simple in construction and may be readily set up; and it isdesigned more especially as a boiler for generating steam for enginesrunning light machinery, such as printing-presses, steamlaunches, &c.

The invention consists in the construction and combination of the parts,as will be hereinafter fully set forth, and particularlypoint ed out inthe claims.

In the accompanying drawings, forming part of this specification, Figurel is a side elevation of a boiler or steam-generator constructed inaccordance with my invention. Fig. 2 is a vertical sectional view. Fig.3 is a plan view, partly in section, the section being taken on the line3 3 ofFig. 2; and Fig. 4 is a horizontal sectional view on the line 4 4of Fig. 2.

A designates the base or ash-pit of the boiler, which is preferablyrectangular in shape and made up of a casting provided with the usualdoorway and above the doorway with a transverse slot, .through which therod for operating the grate passes. The doorway is covered byahorizontally-swinging door hinged to one side of the same and providedwith a damper. The base is also provided with suitable means forsupporting the grate and with brackets a supporting a plate upon whichthe engine may be secured. The upper end of the base or ash-pit has aninwardly-projecting flange A, upon which rests the fire-pot B. Thefire-pot is preferably circular and is provided with double walls,leaving a water-space B between them, a doorway B being formed in oneside of the fire-pot, while the opposite grate, as shown in Fig. 2, andthe upper end of the fire-pot is provided with an annular flange 'or'ring 19 formed integral therewith and to which the outer casing of theboiler is secured.

- O designates a cylindrical boiler or steamgenerator, which is providedwith the usual vertical tubes or flues, through which the products ofcombustion pass from thefire-pot to the smoke-stack, the heads D and Dof the boiler being securely held upon the outer shell by means ofvertical rods E, as shown in Fig. 2. Centrally the boiler C is providedwith a vertical fuel-magazine C, which is secured at its upper and lowerends to the heads D and D, the lower end of the fuel-magazine beingprovided with an extension F, which depends into the fire-pot B, saidextension being secured to the under side of the head D of the boiler bybolts 0, which pass through said head and through apertures in anannular flange f at the upper end of the extension, the lower ends ofthe bolts having transverse apertures, through which locking-keys pass,or the ends of the bolts may be threaded to receive nuts. The head D ofthe boiler fits within the annular flange or ring 17 on the upper end ofthe fire-pot, and surrounding the boiler is an outer shell or casing G,the lower end of which is riveted to the outer edge of the flange 5while its upper end is attached to a hood or dome G. The outer shell orcasing G is provided at suitable intervals with headings which allow forthe expansion of the same, and between this shell or casing and theboiler C is placed a packing g, of asbestos or other suitable fireproofma-.

terial.

The hood or dome G is provided centrally with an opening whichcommunicates with an upper extension F of the fuel-magazine O,theopening being covered by a suitable lid or cover g, which iits over theupper end of the fuel-magazine. The hood or dome is also provided with asmoke-exit opening to which the smoke-stack is connected.

II II designate couplings for connecting the boiler with the water spaceor chamber 13 surrounding the fire'pot, these couplings consisting ofshort pipes 71/ and h, which extend through the boiler and through theouter wall of the fire-pot, and are connected to .each other by avertical pipe 7L2 and elbows Its, the vertical pipes being secured tothe elbows by ti ghtenin g-nuts 71 The couplings II not only serve toconduct the water from the chamber 13 to the boiler but also connect thefire-pot and boiler rigidly to each other. It will be observed that someof the short pipes h are let into the water space or chamber B at theextreme upper end thereof to prevent air collecting therein.

\Vater is fed into the chamber B surrounding the fire-pot by means of apipe I, which leads from a pump or water supply and passes through oneof the thimbles b b to the interior of the fire-pot and extendspartially around one side of the same, where it is bent or looped andbrought back to extend partly around the other side, and is then broughtback to the other thimble, through which it passes and by means ofelbows and short sections of pipe is let into the lower end of thewater-chan'iber. By this arrangement the water is heated before it isfed into the waterchamber.

The steam boiler or generator hereinbefore described occupies but littlespace, and is so constructed that it may be readily set up and takendown, and by reason of the particular arrangement and organization ofthe parts provides a very eifective steam-generator and one that can becheaply manufactured.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination in a steam-boiler or steam-generator, of a base orash-pit A having a grate; a fire-pot mounted on the base or ash-pit andhaving double walls forming a water space or chamber, said fire-pothavin a doorway in one side; thimbles l) and I) let into the walls onthe side of the :lirepotopposite the doorway; a boiler C mounted on thefire-pot and connected with the water space by couplings II; and a pipeI leading from a water supply and passing through. one of the thimblesinto the fire-pot, traversing one side of the fire-pot and passing outthrough the other thimble so as to connect with the lower end of thewater space or chamber, substantially as shown and for the purpose setforth.

2. In a steam-boiler or steamgenerator, the combination of a base orash-pit A having a grate and brackets a to which a plate is socured forsupporting an engine; a lire-pot I; mounted above the ash-pit and havingdouble walls forming a water space; thimbles I) and I) let into thewalls of the lire-pot on the opposite side thereof from the doorway; aboiler O mounted upon the fire-pot and provided with a central fuelmagazine having removable extensions F and F; and an outer shell orcasing G surrounding the boiler and provided at its upper end with ahood or dome G having a central opening communicating with the fuelmagazine; together with couplings II connecting the water space with theboiler, and a pipe I leading from a water supply through one of thethimblcs to the interior of the fire-pot, said pipe traversing one sideof the interior of the fire-pot and passing out through the otherthimble so as to connect with the lower end of the water chamber bypassing through. the outer wall of the fire-pot, substantially as shownand for the purpose set forth.

I11 testimony whereof I affix my signature in presence of two witnesses.

THOMAS \V. GODIV IN.

\Vitnesses: i

A. MYERS, J. H. HAWELL.

